North Dakota Administrative Code
Title 33.1 - Department of Environmental Quality
Article 33.1-20 - Solid Waste Management and Land Protection
Chapter 33.1-20-08 - Disposal of Coal Combustion Residuals in Landfills and Surface Impoundments
Section 33.1-20-08-05 - Operating criteria
Universal Citation: ND Admin Code ยง 33.1-20-08-05
Current through Supplement No. 394, October, 2024
1. Air criteria.
a. The owner or operator of a CCR landfill,
CCR surface impoundment, or any lateral expansion of a CCR unit shall adopt
measures that will effectively minimize CCR from becoming airborne at the
facility, including CCR fugitive dust originating from CCR units, roads, and
other CCR management and material handling activities.
b. The CCR fugitive dust control plan. The
owner or operator of the CCR unit shall prepare and operate in accordance with
a CCR fugitive dust control plan as specified in paragraphs 1 through 6. This
requirement applies in addition to, not in place of, any applicable standards
under the Occupational Safety and Health Act.
(1) The CCR fugitive dust control plan shall
identify and describe the CCR fugitive dust control measures the owner or
operator will use to minimize CCR from becoming airborne at the facility. The
owner or operator shall select, and include in the CCR fugitive dust control
plan, the CCR fugitive dust control measures that are most appropriate for site
conditions, along with an explanation of how the measures selected are
applicable and appropriate for site conditions. Examples of control measures
that may be appropriate include: Locating CCR inside an enclosure or partial
enclosure; operating a water spray or fogging system; reducing fall distances
at material drop points; using wind barriers, compaction, or vegetative covers;
establishing and enforcing reduced vehicle speed limits; paving and sweeping
roads; covering trucks transporting CCR; reducing or halting operations during
high wind events; or applying a daily cover.
(2) If the owner or operator operates a CCR
landfill or any lateral expansion of a CCR landfill, the CCR fugitive dust
control plan must include procedures to emplace CCR as conditioned CCR.
Conditioned CCR means wetting CCR with water to a moisture content that will
prevent wind dispersal but will not result in free liquids. In lieu of water,
CCR conditioning may be accomplished with an appropriate chemical dust
suppression agent.
(3) The CCR
fugitive dust control plan must include procedures to log citizen complaints
received by the owner or operator involving CCR fugitive dust events at the
facility.
(4) The CCR fugitive dust
control plan must include a description of the procedures the owner or operator
will follow to periodically assess the effectiveness of the control
plan.
(5) The owner or operator of
an existing CCR unit shall include an initial CCR fugitive dust control plan
for the facility with the application for a permit. For new CCR units or
lateral expansions of CCR units, the fugitive dust control plan must be
included with the application for a new permit or permit modification. The
owner or operator has completed the initial CCR fugitive dust control plan if
the plan has been approved by the department and placed in the facility's
operating record.
(6) Amendment of
the plan. The owner or operator of a CCR unit subject to the requirements of
this section may amend the written CCR fugitive dust control plan at any time
with approval by the department, provided the revised plan is placed in the
facility's operating record. The owner or operator shall amend the written plan
whenever there is a change in conditions that would substantially affect the
written plan in effect, such as the construction and operation of a new CCR
unit.
c. Annual CCR
fugitive dust control report. The owner or operator of a CCR unit shall prepare
an annual CCR fugitive dust control report that includes a description of the
actions taken by the owner or operator to control CCR fugitive dust, a record
of all citizen complaints, and a summary of any corrective measures taken. The
annual CCR fugitive dust control report must be included with the facility's
annual report required by subsection 4 of section 33.1-20-04.1-04. For purposes
of this subdivision, the owner or operator has completed the annual CCR
fugitive dust control report if the annual report has been submitted to the
department and placed in the facility's operating record.
2. Run-on and runoff controls for CCR landfills.
a. The owner or operator of an
existing or new CCR landfill or any lateral expansion of a CCR landfill shall
design, construct, operate, and maintain:
(1)
A run-on control system to prevent flow onto the active portion of the CCR unit
during the peak discharge from a twenty-four-hour, twenty-five-year storm;
and
(2) A run-off control system
from the active portion of the CCR unit to collect and control at least the
water volume resulting from a twenty-four-hour, twenty-five-year
storm.
b. Run-off from
the active portion of the CCR unit must be handled in accordance with the
surface water requirements in chapters 33.1-16-01 and 33.1-16-02.1.
c. Run-on and run-off control system plan:
(1) Content of the plan. The owner or
operator shall prepare initial and periodic run-on and run-off control system
plans for the CCR unit according to the time frames specified in this
subsection. These plans must document how the run-on and run-off control
systems have been designed and constructed to meet the applicable requirements
of this subsection. Each plan must be supported by appropriate engineering
calculations. The owner or operator has completed the initial run-on and
run-off control system plan if the plan has been approved by the department and
placed in the facility's operating record.
(2) Amendment of the plan. The owner or
operator may amend the written run-on and run-off control system plan at any
time provided the revised plan is placed in the facility's operating record.
The owner or operator shall amend the written run-on and run-off control system
plan whenever there is a change in conditions that would substantially affect
the written plan in effect.
(3)
Time frames for preparing the initial plan.
(a) Existing CCR landfills. The owner or
operator of the CCR unit shall include the initial run-on and run-off control
system plan with the application for a permit.
(b) New CCR landfills and any lateral
expansion of a CCR landfill. The owner or operator shall include the initial
run-on and run-off control system plan with the application for a new permit or
permit modification.
(4)
Frequency for revising the plan. The owner or operator of the CCR unit shall
prepare periodic run-on and run-off control system plans required by paragraph
1 every five years. The date of completing the initial plan is the basis for
establishing the deadline to complete the first subsequent plan. The owner or
operator may complete any required plan prior to the required deadline provided
the owner or operator places the completed plan into the facility's operating
record within a reasonable amount of time. In all cases, the deadline for
completing a subsequent plan is based on the date of completing the previous
plan. The owner or operator has completed a periodic run-on and run-off control
system plan when the plan has been approved by the department and placed in the
facility's operating record.
3. Hydrologic and hydraulic capacity requirements for CCR surface impoundments.
a.
The owner or operator of an existing or new CCR surface impoundment or any
lateral expansion of a CCR surface impoundment shall design, construct,
operate, and maintain an inflow design flood control system as specified in
paragraphs 1 and 2.
(1) The inflow design
flood control system must adequately manage flow into the CCR unit during and
following the peak discharge of the inflow design flood specified in paragraph
3.
(2) The inflow design flood
control system must adequately manage flow from the CCR unit to collect and
control the peak discharge resulting from the inflow design flood specified in
paragraph 3.
(3) The inflow design
flood is:
(a) For a high-hazard potential CCR
surface impoundment, as determined under subdivision a of subsection 3 of
section 33.1-20-08-04, the probable maximum flood;
(b) For a significant-hazard potential CCR
surface impoundment, as determined under subdivision a of subsection 3 of
section 33.1-20-08-04, the one thousand-year flood;
(c) For a low-hazard potential CCR surface
impoundment, as determined under subdivision a of subsection 3 of section
33.1-20-08-04, the one hundred-year flood; or
(d) For an incised CCR surface impoundment,
the twenty-five-year flood.
b. Discharge from the CCR unit must be
handled in accordance with the surface water requirements under chapters
33.1-16-01 and 33.1-16-02.1.
c.
Inflow design flood control system plan:
(1)
Content of the plan. The owner or operator shall prepare initial and periodic
inflow design flood control system plans for the CCR unit according to the time
frames specified in this subdivision. These plans must document how the inflow
design flood control system has been designed and constructed to meet the
requirements of this section. Each plan must be supported by appropriate
engineering calculations. The owner or operator of the CCR unit has completed
the inflow design flood control system plan when the plan has been approved by
the department and placed in the facility's operating record.
(2) Amendment of the plan. The owner or
operator of the CCR unit may amend the written inflow design flood control
system plan at any time provided the revised plan is approved by the department
and placed in the facility's operating record. The owner or operator must amend
the written inflow design flood control system plan whenever there is a change
in conditions that would substantially affect the written plan in
effect.
(3) Time frames for
preparing the initial plan:
(a) Existing CCR
surface impoundments. The owner or operator of the CCR unit shall include the
initial inflow design flood control system plan with the application for a
permit.
(b) New CCR surface
impoundments and any lateral expansion of a CCR surface impoundment. The owner
or operator shall include the initial inflow design flood control system plan
with the application for a new permit or permit modification.
(4) Frequency for revising the
plan. The owner or operator shall prepare periodic inflow design flood control
system plans every five years. The date of completing the initial plan is the
basis for establishing the deadline to complete the first periodic plan. The
owner or operator may complete any required plan prior to the required deadline
provided the owner or operator places the completed plan into the facility's
operating record within a reasonable amount of time. In all cases, the deadline
for completing a subsequent plan is based on the date of completing the
previous plan. For purposes of this paragraph, the owner or operator has
completed an inflow design flood control system plan if the plan has been
approved by the department and placed in the facility's operating
record.
4. Inspection requirements for CCR surface impoundments.
a. Inspections by a qualified person.
(1) All CCR surface impoundments and any
lateral expansion of a CCR surface impoundment must be examined by a qualified
person as follows:
(a) Inspect at least once
each calendar week for any appearances of actual or potential structural
weakness and other conditions which are disrupting or have the potential to
disrupt the operation or safety of the CCR unit;
(b) Inspect at least once each calendar week
the discharge of all outlets of hydraulic structures which pass underneath the
base of the surface impoundment or through the dike of the CCR unit for
abnormal discoloration, flow, or discharge of debris or sediment; and
(c) Monitor at least once each calendar month
all CCR unit instrumentation.
(d)
The results of the inspection by a qualified person must be recorded in the
facility's operating record.
(2) Time frames for inspections by a
qualified person.
(a) Existing CCR surface
impoundments. The owner or operator of the CCR unit shall initiate the
inspections by a qualified person no later than one week after July 1, 2020,
for weekly inspections and one month after July 1, 2020, for monthly
inspections.
(b) New CCR surface
impoundments and any lateral expansion of a CCR surface impoundment. The owner
or operator of the CCR unit shall initiate the inspections by a qualified
person upon initial receipt of CCR by the CCR unit.
b. Annual inspections by a
qualified professional engineer.
(1) If the
existing or new CCR surface impoundment or any lateral expansion of the CCR
surface impoundment is subject to the periodic structural stability assessment
requirements under subdivision d subsection 3 of section 33.1-20-08-04, the
CCR unit must additionally be inspected on a periodic basis by a qualified
professional engineer to ensure the design, construction, operation, and
maintenance of the CCR unit is consistent with recognized and generally
accepted good engineering practices. The inspection, at a minimum, must
include:
(a) A review of available information
regarding the status and condition of the CCR unit, including files available
in the operating record (e.g., CCR unit design and construction information,
previous periodic structural stability assessments, the results of inspections
by a qualified person, and results of previous annual inspections);
(b) A visual inspection of the CCR unit to
identify signs of distress or malfunction of the CCR unit and appurtenant
structures; and
(c) A visual
inspection of any hydraulic structures underlying the base of the CCR unit or
passing through the dike of the CCR unit for structural integrity and continued
safe and reliable operation.
(2) Inspection report. The qualified
professional engineer shall prepare a report following each inspection that
addresses:
(a) Any changes in geometry of the
impounding structure since the previous annual inspection;
(b) The location and type of existing
instrumentation and the maximum recorded readings of each instrument since the
previous annual inspection;
(c) The
approximate minimum, maximum, and present depth and elevation of the impounded
water and CCR since the previous annual inspection;
(d) The storage capacity of the impounding
structure at the time of the inspection;
(e) The approximate volume of the impounded
water and CCR at the time of the inspection;
(f) Any appearances of an actual or potential
structural weakness of the CCR unit, in addition to any existing conditions
that are disrupting or have the potential to disrupt the operation and safety
of the CCR unit and appurtenant structures; and
(g) Any other changes which may have affected
the stability or operation of the impounding structure since the previous
annual inspection.
(3)
Time frames for conducting the initial inspection.
(a) Existing CCR surface impoundments. The
owner or operator of the CCR unit shall complete the initial inspection by a
qualified professional engineer no later than one year after July 1,
2020.
(b) New CCR surface
impoundments and any lateral expansion of a CCR surface impoundment. The owner
or operator of the CCR unit shall complete the initial annual inspection by a
qualified professional engineer no later than fourteen months following the
date of initial receipt of CCR in the CCR unit.
(4) Frequency of inspections.
(a) Except as provided for in subparagraph b,
the owner or operator of the CCR unit shall conduct the inspections required in
this section on an annual basis. The date of completing the initial inspection
report is the basis for establishing the deadline to complete the first
subsequent inspection. Any required inspection may be conducted prior to the
required deadline provided the owner or operator places the completed
inspection report into the facility's operating record within a reasonable
amount of time. In all cases, the deadline for completing subsequent inspection
reports is based on the date of completing the previous inspection report. For
purposes of this paragraph, the owner or operator has completed an inspection
if the inspection report has been submitted to the department and placed in the
facility's operating record.
(b) In
any calendar year in which both the periodic inspection by a qualified
professional engineer and the quinquennial (occurring every five years)
structural stability assessment by a qualified professional engineer required
by subdivision d of subsection 3 of section 33.1-20-08-04 are required to be
completed, the annual inspection is not required, provided the structural
stability assessment is completed during the calendar year. In the year
following the quinquennial structural stability assessment, the deadline for
completing the next annual inspection is one year from the date of completing
the quinquennial structural stability assessment.
(5) If a deficiency or release is identified
during an inspection, the owner or operator shall notify the department and
remedy the deficiency or release in accordance with applicable requirements in
subsections 6 through 8 of section 33.1-20-08-06.
5. Inspection requirements for CCR landfills.
a. Inspections by a qualified
person.
(1) All CCR landfills and any lateral
expansion of a CCR landfill must be examined by a qualified person as follows:
(a) Inspect weekly for any appearances of
actual or potential structural weakness and other conditions that are
disrupting or have the potential to disrupt the operation or safety of the CCR
unit; and
(b) The results of the
inspection by a qualified person must be recorded in the facility's operating
record.
(2) Time frames
for inspections by a qualified person.
(a)
Existing CCR landfills. The owner or operator of the CCR unit shall initiate
the inspections by a qualified person no later than one week after July 1,
2020.
(b) New CCR landfills and any
lateral expansion of a CCR landfill. The owner or operator of the CCR unit
shall initiate the inspections by a qualified person upon initial receipt of
CCR by the CCR unit.
b. Annual inspections by a qualified
professional engineer.
(1) Existing and new
CCR landfills and any lateral expansion of a CCR landfill must be inspected on
a periodic basis by a qualified professional engineer to ensure that the
design, construction, operation, and maintenance of the CCR unit is consistent
with recognized and generally accepted good engineering practices. The
inspection must, at a minimum, include:
(a) A
review of available information regarding the status and condition of the CCR
unit, including files available in the operating record (e.g., the results of
inspections by a qualified person, and results of previous annual inspections);
and
(b) A visual inspection of the
CCR unit to identify signs of distress or malfunction of the CCR
unit.
(2) Inspection
report. The qualified professional engineer shall prepare a report following
each inspection that addresses the following:
(a) Any changes in geometry of the structure
since the previous annual inspection;
(b) The approximate volume of CCR contained
in the unit at the time of the inspection;
(c) Any appearances of an actual or potential
structural weakness of the CCR unit, in addition to any existing conditions
that are disrupting or have the potential to disrupt the operation and safety
of the CCR unit; and
(d) Any other
changes which may have affected the stability or operation of the CCR unit
since the previous annual inspection.
(3) Time frames for conducting the initial
inspection.
(a) Existing CCR landfills. The
owner or operator of the CCR unit shall complete the initial inspection by a
qualified professional engineer no later than one year after July 1,
2020.
(b) New CCR landfills and any
lateral expansion of a CCR landfill. The owner or operator of the CCR unit
shall complete the initial annual inspection by a qualified professional
engineer no later than fourteen months following the date of initial receipt of
CCR in the CCR unit.
(4)
Frequency of inspections. The owner or operator of the CCR unit shall conduct
the inspection required by this subdivision on an annual basis. The date of
completing the initial inspection report is the basis for establishing the
deadline to complete the first subsequent inspection. Any required inspection
may be conducted prior to the required deadline provided the owner or operator
places the completed inspection report into the facility's operating record
within a reasonable amount of time. In all cases, the deadline for completing
subsequent inspection reports is based on the date of completing the previous
inspection report. For purposes of this paragraph, the owner or operator has
completed an inspection if the inspection report has been submitted to the
department and placed in the facility's operating record.
(5) If a deficiency or release is identified
during an inspection, the owner or operator shall notify the department and
remedy the deficiency or release in accordance with applicable requirements in
subsections 6 through 8 of section 33.1-20-08-06.
General Authority: NDCC 23.1-08-03
Law Implemented: NDCC 23.1-08-03, 23.1-08-04
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